Battery Dead Problems of Nissan Kicks

I was driving on highway and the front collision sensor kept going off. We pulled the vehicle over at our destination and parked. Cleared front cameras shut engine off, and all warning malfunction indicators kept lighting up. 1st no key detected, then brake warning, then head light malfunction, then brake, seat belt, and check engine warnings all flashed at same time. Then after sometime passed brakes locked up, and power to entire car was gone. No lights no nothing. Towed car to dealership where I purchased it, they had it for 2 days and could not find the problem. They had to jump the battery to get it started, then head light malfunction was seen on screen again. Mechanic kept trying to find other issues, but was unsuccessful and the battery was not failing. When I received the car back and tried to start it no key indicator light came on. Then placed key on start button to get it started. They still have no clue what this was. Said it was a fluke. I believe this could be a major problem due to sensors, malfunctioning, since they had been replaced once already, due to malfunctions. Not safe if this happens while driving down the highway, thankfully the car was parked when it occurred. I have included 2 photos shown to ed martin Nissan dealership service department, where I towed the car to for diagnostic. They told me they could not find the issue to repair. Consumer stated engine was parked at my destination. When she tried to start the car as usual, pushing both the start button and pressing the brake. Brakes would not compress. Then the warning light started flashing.

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